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MdePkg/BaseFdtLib: Add FdtStringListCount and FdtStringListSearch wrappers

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Add UEFI-native wrappers for libfdt string list count and search APIs.

Signed-off-by: Thamballi Sreelalitha <sreelali@qti.qualcomm.com>
This commit is contained in:
Thamballi Sreelalitha 2026-05-29 21:14:15 +05:30 • committed by mergify[bot]
parent b1a2983ace
commit d39a7ed757
2 changed files with 96 additions and 0 deletions
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45
MdePkg/Include/Library/FdtLib.h
View file

@ -12,6 +12,8 @@
Refer to FDT specification: https://www.devicetree.org/specifications/
Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@ -560,6 +562,49 @@ FdtStringListContains (
IN CONST CHAR8 *String
);
/**
Returns the number of strings in the given property.
@param[in] Fdt The pointer to FDT blob.
@param[in] NodeOffset The offset to the node which contains the property.
@param[in] Property Name of the property containing the string list.
@return The number of strings in the property, or a negative error code
on failure. Returns -FDT_ERR_BADVALUE if the property value is
not a valid NUL-terminated string list.
**/
INT32
EFIAPI
FdtStringListCount (
IN CONST VOID *Fdt,
IN INT32 NodeOffset,
IN CONST CHAR8 *Property
);
/**
Searches for a string in a string list property and returns its index.
@param[in] Fdt The pointer to FDT blob.
@param[in] NodeOffset The offset to the node which contains the property.
@param[in] Property The name of the property to search.
@param[in] String String to find within the list.
@return The index of the string in the string list (>=0) on success,
-FDT_ERR_NOTFOUND if the string is not found,
-FDT_ERR_BADVALUE if the property is not a valid NUL-terminated
string list, or another negative error code on failure.
**/
INT32
EFIAPI
FdtStringListSearch (
IN CONST VOID *Fdt,
IN INT32 NodeOffset,
IN CONST CHAR8 *Property,
IN CONST CHAR8 *String
);
/**
Returns a property with the given name from the given node.

51
MdePkg/Library/BaseFdtLib/FdtLib.c
View file

@ -2,6 +2,8 @@
Flattened Device Tree Library.
Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@ -429,6 +431,55 @@ FdtStringListContains (
return fdt_stringlist_contains (StringList, ListLength, String);
}
/**
Returns the number of strings in the given property.
@param[in] Fdt The pointer to FDT blob.
@param[in] NodeOffset The offset to the given node.
@param[in] Property Name of the property containing the string list.
@return The number of strings in the property, or a negative error code
on failure. Returns -FDT_ERR_BADVALUE if the property value is
not a valid NUL-terminated string list.
**/
INT32
EFIAPI
FdtStringListCount (
IN CONST VOID *Fdt,
IN INT32 NodeOffset,
IN CONST CHAR8 *Property
)
{
return fdt_stringlist_count (Fdt, NodeOffset, Property);
}
/**
Searches for a string in a string list property and returns its index.
@param[in] Fdt The pointer to FDT blob.
@param[in] NodeOffset The offset to the given node.
@param[in] Property The name of the property to search.
@param[in] String String to find within the list.
@return The index of the string in the string list (>=0) on success,
-FDT_ERR_NOTFOUND if the string is not found,
-FDT_ERR_BADVALUE if the property is not a valid NUL-terminated
string list, or another negative error code on failure.
**/
INT32
EFIAPI
FdtStringListSearch (
IN CONST VOID *Fdt,
IN INT32 NodeOffset,
IN CONST CHAR8 *Property,
IN CONST CHAR8 *String
)
{
return fdt_stringlist_search (Fdt, NodeOffset, Property, String);
}
/**
Returns a property with the given name from the given node.